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Our Membership
SEIA member companies
The Solar and Storage Industries Institute
The Solar and Storage Industries Institute (SI2), is accelerating the transition to carbon-free electricity through clean energy research and analysis. The institute aims to use policy research, public education initiatives, and direct outreach to policymakers to explain the benefits of clean energy and develop pathways to widespread solar and storage use.
SI2 is the charitable and education arm of the Solar Energy Industries Association (SEIA) and is a 501(c)3 nonprofit.
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Meet our State Affiliates
SEIA has formalized partnerships with our Affiliates. These partnerships coordinate the resources of both organizations and promote the growth of solar markets around the country. Use the map below to explore the various official SEIA Affiliates and their contact information.
Is your organization interested in becoming an official SEIA Affiliate?
Partnership with RE+
Together, SEIA and SEPA (Smart Electric Power Alliance) produce RE+. Unlike other industry events, all proceeds from RE+ events support the expansion of the energy industry through SEIA and SEPA’s year-round research and education activities, and extensive advocacy and advisory efforts. RE+ events encompass a wide-ranging portfolio, including events within the U.S. focusing on trends and policies in specific states and regions, and international events that bring together clean energy leaders in up-and-coming markets across the world. These events explore trends and developments in a variety of clean energy sectors such as solar, storage, hydrogen, EVs, microgrids, and more.
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Upcoming Events
Virtual Event: Navigating Prevailing Wage and Apprenticeship Requirements for Federal Clean Energy Tax Credits
Date & Time: May 22 at 10:00 am – 2:00 pm PT / 1:00 – 5:00 pm ET This virtual event is presented by Alliant Consulting. SEIA members who are registered for the eve...
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SEIA’s Virtual Solar & Storage Codes & Standards Symposium
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Meeting Equal Employment Opportunity Requirements for Registered Apprenticeship
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Sponsorship Opportunities
Elevate your brand visibility among industry leaders and professionals, enhancing your reputation as a market leader in clean energy.
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